3 man mechanics

[shipwreck]

After 7 years of doing NFHS ball and this year getting picked to do Class A Districts, I am preparing myself for next fall when I am going to apply to do the State tournnament. In Nebraska we do games using the 3 man system. Can someone tell me where to get a video or CD Rom showing the proper mechanics for the 3 man. Just as a side bar, I umpire for love of the game not for money, but they do pay $45.00 a game per umpire for State and $40.00 per umpire for Districts. Thanks, Dave